Page 349 of 512
3496-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON_HV_U (OM41451U)
■12-volt battery
P. 358
Engine compar tment
Fuse boxes ( P. 379)
Engine oil filler cap ( P. 351)
Engine oil level dipstick ( P. 350)
Brake fluid reservoir ( P. 356)
Engine coolant radiator ( P. 355) Power control unit coolant
radiator (
P. 355)
Condenser ( P. 355)
Electric cooling fans
Engine coolant reservoir ( P. 353)
Washer fluid tank ( P. 357)
Power control unit coolant res-
ervoir ( P. 353)1
2
3
4
5
6
7
8
9
10
11
Page 350 of 512
3506-3. Do-it-yourself maintenance
AVALON_HV_U (OM41451U)
With the engine at operating temperature and turned off, check the oil
level on the dipstick.
■Checking the engine oilPark the vehicle on level ground. After warming up the engine
and turning off the hybrid system , wait more than 5 minutes for
the oil to drain back into the bottom of the engine.
Holding a rag under the end,
pull the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end,
pull the dipstick out and
check the oil level.
Low
Normal
Excessive
The shape of the dipstick may
differ depending on the type of
vehicle or engine.
Wipe the dipstick and reinsert it fully.
Engine oil
1
2
3
4
5
1
2
3
6
Page 351 of 512

3516-3. Do-it-yourself maintenance
6
Maintenance and care
AVALON_HV_U (OM41451U)■
Adding engine oil
If the oil level is below or near
the low level mark, add engine
oil of the same type as that
already in the engine.
Make sure to check the oil type and prepare the items needed
before adding oil.
Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.
■ Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the following
situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance intervals.
●When the engine is new, for example directly after purchasing the vehicle or
after replacing the engine
● If low quality oil or oil of an inappropriate viscosity is used
● When driving at high engine speeds or with a heavy load, or when driving
while accelerating or decelerating frequently
● When leaving the engine idling for a long time, or when driving frequently
through heavy traffic
Engine oil selection P. 456
Oil quantity
(Low Full) 1.6 qt. (1.5 L, 1.3 Imp. qt.)
Items
Clean funnel
1
2
3
Page 352 of 512

3526-3. Do-it-yourself maintenance
AVALON_HV_U (OM41451U)
CAUTION
■Used engine oil
●Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation and skin cancer, so care
should be taken to avoid prolonged and repeated contact. To remove used
engine oil from your skin, wash thoroughly with soap and water.
● Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewers or onto the
ground.
Call your Toyota dealer, service station or auto parts store for information
concerning recycling or disposal.
● Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■ When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
● Avoid overfilling, or the engine could be damaged.
● Check the oil level on the dipstick every time you refill the vehicle.
● Be sure the engine oil filler cap is properly tightened.
Page 413 of 512

4137-2. Steps to take in an emergency
7
When trouble arises
AVALON_HV_U (OM41451U)
The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Im mediately stop the vehicle in a
safe place and contact your Toyota dealer.
Failure to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle ins pected by your Toyota dealer immediately.
Stop the vehicle immediately.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details
Malfunction indicator lampIndicates a malfunction in:
• The hybrid system;
• The electronic engine control system;
• The electronic throttle control system; or
• The hybrid transmission control system
SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
ABS warning lightIndicates a malfunction in:
• The ABS; or
• The brake assist system
Electric power steering system warning light (warning
buzzer)Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
Page 455 of 512
4558-1. Specifications
8
Vehicle specifications
AVALON_HV_U (OM41451U)
*: The engine oil capacity is a reference quantity to be used when changingthe engine oil. Warm up the engine and turn off the hybrid system, wait
more than 5 minutes, and check the oil level on the dipstick.
Lubrication system
Oil capacity
Drain and refill (Reference
*)
With filter
Without filter
4.6 qt. (4.4 L, 3.9 Imp. qt.)
4.2 qt. (4.0 L, 3.5 Imp. qt.)
Page 456 of 512

4568-1. Specifications
AVALON_HV_U (OM41451U)■
Engine oil selection
“Toyota Genuine Motor Oil” is used
in your Toyota vehicle. Use
Toyota approved “Toyota Genuine Motor Oil” or equivalent to satisfy
the following grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice
for good fuel economy and
good starting in cold weather.
If SAE 0W-20 is not available,
SAE 5W-20 oil may be used.
However, it must be replaced
with SAE 0W-20 at the next oil
change.
Oil viscosity (0W-20 is explained here as an example): • The 0W in 0W-20 indicates the characteristic of the oil which
allows cold startability. Oils wi th a lower value before the W allow
for easier starting of the engine in cold weather.
• The 20 in 0W-20 indicates the viscosity characteristic of the oil
when the oil is at high temperature. An oil with a higher viscosity
(one with a higher value) may be better suited if the vehicle is
operated at high speeds, or under extreme load conditions.
How to read oil container label:
The ILSAC (International Lubri-
cant Standardization and
Approval Committee) Certifica-
tion Mark is added to some oil
containers to help you select
the oil you should use.
Outside temperature
Page 471 of 512

4718-1. Specifications
8
Vehicle specifications
AVALON_HV_U (OM41451U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressureThe maximum cold inflated pressure to which
a tire may be inflated, shown on the sidewall
of the tire
Recommended infla-
tion pressureCold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of hybrid
transmission, power steering, power brakes,
power windows, power seats, radio and
heater, to the extent t hat these items are avail-
able as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1* that
follows
Occupant distributionDistribution of occupants in a vehicle as speci-
fied in the third column of Table 1* below